Measurement and simulation of soluble, exchangeable, and non-exchangeable ammonium in three soils

Cavalli, Daniele; Consolati, G.; Bechini, Luca

doi:10.1016/j.geoderma.2015.05.011

Cited by 27 publications

(12 citation statements)

References 45 publications

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“…Analogously, a blank and a control test were prepared using the treatment solution (without a soil sample) and a soil sample with distilled water, respectively. Shaking at a speed of 14 min -1 (on a rotary shaker GFL 3040) was carried out for designated periods of 1,4,8,16,24, and 48 hours, which were selected according to the U.S. Environmental Protection Agency [24]. After the shaking period, the working solutions were filtered through paper filters and prepared for chemical analysis.…”

Section: Batch Testsmentioning

confidence: 99%

“…Due to its negative charge, NO 3 -is known to be more mobile in the soil-water environment than the positively charged NH 4 + ions [16,18,34]. For .…”

Section: Batch Incubationmentioning

confidence: 99%

“…Similarly, PochMassegú et al [14] and Chen et al [15] have demonstrated that the hydrogeological characteristics of the substrate, volume, and frequency of rainfall, soil structure, flow of groundwater, and accumulation of NO 3 -in the soil profile influence groundwater NO 3 -concentrations. The main parameters that affect the migration of contaminants include soil particle distribution, hydraulic permeability, preferential flow paths, and sorption capacity of mineral and organic particles [16,17]. Processes responsible for the movement of pollutants via mass flow in permeable soils are advection and dispersion, whereas diffusion processes are dominant in soils with low permeability [18].…”

mentioning

confidence: 99%

“…A lower rate of water flow through fine soils can increase the retention time of dissolved contaminants in soil pores, which allows them to participate in biochemical processes (e.g., denitrification processes) that are insignificant in highly permeable soils. In the case of pollutants (inter alia nitrogen compounds) that participate in physicochemical and biological reactions, the saturation degree of the soil (oxygen availability), the presence of organic carbon and nutrients, and microbial activity are also important [16,19].…”

mentioning

confidence: 99%

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Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Fronczyk¹,

Sieczka²,

Lech³

et al. 2016

Pol. J. Environ. Stud.

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Section: Batch Testsmentioning

confidence: 99%

“…Due to its negative charge, NO 3 -is known to be more mobile in the soil-water environment than the positively charged NH 4 + ions [16,18,34]. For .…”

Section: Batch Incubationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Fronczyk¹,

Sieczka²,

Lech³

et al. 2016

Pol. J. Environ. Stud.

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“…There is no significant difference on the average ANAPs between pure sand soil and pure loamy soil ( = 0.89 = 0.35), indicating there was no difference of NH 4 + -N adsorbability for sand soil and loamy soil. However, previous publications reported that the clay particle content of loamy soil was more than that of sandy soil leading to better NH 4 + -N adsorption capacity [63][64][65]. Additionally, comparisons of different pure biochars adsorbing NH 4 + -N in biogas slurry are shown in Figure 6.…”

Section: Effects Of Biochars On Different Soils Adsorbingmentioning

confidence: 99%

Effects of Three Biochars as Adsorbents on Soils Adsorbing Ammonium Nitrogen in Biogas Slurry

Wang

et al. 2017

Journal of Chemistry

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The increasing concern of biogas slurry disposal and nitrogen loss in soils has brought back the interest in using biochar as an adsorbent of biogas slurry in soils. Three types of biochars, commercial activated carbon, pyrolysis productions derived from rice husk, and nut shell, were added as adsorbents in two types of soils (sandy and loamy) at solid weight ratio of 5%, 10%, 15%, and 20% to investigate the effects of biochars on soils adsorbing ammonium nitrogen (NH 4 + -N) in biogas slurry using oscillation method. There was no difference of NH 4 + -N adsorbability for sand soil and loamy soil. The NH 4 + -N adsorption capacity of soils increased as the additive biochars increased from 0 to 20%. The smaller particle size of biochars led to the shorter stable adsorption time and the better NH 4 + -N adsorption capacity. Commercial activated carbon showed the best NH 4 + -N adsorption capacity in biogas slurry, followed by the nut shell carbon. The rice husk carbon was the worst. The results in this study provide a feasible and cost-effective assessment method of biochars for increasing the NH 4 + -N adsorption capacity of soils in biogas slurry, as well as good insight into effects of different biochars on improving NH 4 + -N adsorption capacity of soils.

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Direct evidence on the impact of organic amendments on carbon stabilization in soil microaggregates

Pitumpe Arachchige,

Hettiarachchi,

Rice

et al. 2024

Soil Science Soc of Amer J

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Direct evidence‐based approaches are vital in understanding the involvement of abiotic/biotic factors and evaluating the newly proposed theories on soil carbon (C) stabilization. Microaggregates (150–250 µm) collected from a corn system (>22 years; Kansas, USA), which had been under no‐till with different nitrogen (N) treatments were analyzed (N treatments: manure/compost, urea, zero fertilizer). We studied C stabilization in free soil microaggregates (with preserved aggregate architecture), directly using scanning transmission X‐ray microscopy coupled with near edge X‐ray absorption fine structure (STXM‐NEXAFS) spectroscopy. Submicron scale findings were complemented with bulk chemical analysis. The STXM‐NEXAFS analysis revealed soil organic carbon (SOC) preservation inside nano‐ and micro‐pores and organo–mineral association, various degrees of humification, and high molecular diversity. The presence of microbial‐derived C was found in manure‐/compost‐added microaggregates highlighting the contribution of organic amendments in facilitating microbial diversity. The incidence of aragonite‐like minerals suggested the biologically/chemically active nature of microaggregate cores. Bulk analysis of free microaggregates showed a higher concentration of SOC (6.5%), ammonium oxalate extractable Fe/Al/Si), and higher aliphaticity of humic acid in manure‐/compost‐added soils compared to inorganic fertilizer (3% SOC) and control (2.7% SOC) treatments. The co‐existence of elements (calcium [Ca]/C, iron [Fe]/N, Fe/C, aluminum [Al]/C, and silicon [Si]/C) was partially supported by bulk chemical analysis that indicated a strong association between ammonium oxalate extractable Fe/Al/Si and SOC (R2 = 0.63—0.77). Overall, our study provided direct/indirect evidence for the complex and interactive involvement of chemical, mineralogical, and biological mechanisms that may have been stimulated by the long‐term addition of compost/manure in stabilizing SOC.

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Measurement and simulation of soluble, exchangeable, and non-exchangeable ammonium in three soils

Cited by 27 publications

References 45 publications

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Effects of Three Biochars as Adsorbents on Soils Adsorbing Ammonium Nitrogen in Biogas Slurry

Direct evidence on the impact of organic amendments on carbon stabilization in soil microaggregates

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